US Bridges

Old Alvin RD over Drainage Ditch

Good

Brazoria County, Texas · 0.70 MI N of FM 518 · Structure no. 120200M01825003

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
3,100
2011 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Old Alvin RD over Drainage Ditch is a prestressed concrete slab carrying Old Alvin RD over Drainage Ditch in Brazoria County, Texas. It was built in 2010, so it is 15 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,100 vehicles a day, roughly 5% of them trucks, projected to reach 4,500 by 2031. The structure is 102 ft (31.1 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOld Alvin RD
CrossesDrainage Ditch
Location0.70 MI N of FM 518
RouteCity Street 0
CountyBrazoria County
StateTexas
Coordinates29.57208, -95.27757
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width78 ft (23.8 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2011)
Projected traffic4,500 by 2031
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Alvin RD over Drainage Ditch built?

It was built in 2010, making it 15 years old in 2025.

What condition is Old Alvin RD over Drainage Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Old Alvin RD over Drainage Ditch carry?

About 3,100 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Old Alvin RD over Drainage Ditch?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 78 ft wide.

Who owns Old Alvin RD over Drainage Ditch?

It is owned by the Town or Township Highway Agency.